Files
melonDS/src/GPU_OpenGL.h
Jesse Talavera-Greenberg db963aa002 Make the NDS teardown more robust (#1798)
* Make cleanup a little more robust to mitigate undefined behavior

- Add some null checks before cleaning up the GPU3D renderer
- Make sure that all deleted objects are null
- Move cleanup logic out of an assert call
- Note that deleting a null pointer is a no-op, so there's no need to check for null beforehand
- Use RAII for GLCompositor instead of Init/DeInit methods

* Replace a DeInit call that I missed

* Make ARMJIT_Memory less likely to generate errors

- Set FastMem7/9Start to nullptr at the end
- Only close and unmap the file if it's initialized

* Make Renderer3D manage its resources with RAII

* Don't try to deallocate frontend resources that aren't loaded

* Make ARMJIT_Memory::DeInit more robust on the Switch

* Reset MemoryFile on Windows to INVALID_HANDLE_VALUE, not nullptr

- There is a difference

* Don't explicitly store a Valid state in GLCompositor or the 3D renderers

- Instead, create them with static methods while making the actual constructors private

* Make initialization of OpenGL resources fail if OpenGL isn't loaded

* assert that OpenGL is loaded instead of returning failure
2023-09-15 15:31:05 +02:00

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/*
Copyright 2016-2022 melonDS team
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#pragma once
#include "OpenGLSupport.h"
#include <array>
#include <memory>
namespace GPU
{
struct RenderSettings;
class GLCompositor
{
public:
static std::unique_ptr<GLCompositor> New() noexcept;
GLCompositor(const GLCompositor&) = delete;
GLCompositor& operator=(const GLCompositor&) = delete;
~GLCompositor();
void Reset();
void SetRenderSettings(RenderSettings& settings);
void Stop();
void RenderFrame();
void BindOutputTexture(int buf);
private:
GLCompositor(std::array<GLuint, 3> CompShader) noexcept;
int Scale;
int ScreenH, ScreenW;
std::array<GLuint, 3> CompShader;
GLuint CompScaleLoc;
GLuint Comp3DXPosLoc;
GLuint CompVertexBufferID;
GLuint CompVertexArrayID;
struct CompVertex
{
float Position[2];
float Texcoord[2];
};
CompVertex CompVertices[2 * 3*2];
GLuint CompScreenInputTex;
GLuint CompScreenOutputTex[2];
GLuint CompScreenOutputFB[2];
};
}